If this is a new onset of severe headaches, you really need to get in and be examined by your primary medical physician. I also agree that your b/p isn't anywhere near significant enough to warrant the severe headaches that you're describing.
Have you had, or been diagnosed with cluster, tension, or migraine headaches before? Do you have a significant family history of hypertension (High Blood Pressure)? Do you take in a lot of caffeine daily?
You've already been given some good suggestions with the hawthorne berry, celery seed, and garlic supplementation to help control b/p issuses. Limiting salt intake is always vastly overlooked in b/p control. Excessive sodium can wreak "Havoc" (A little pun
) on your b/p.